Pope Benedict XVI greets pilgrims at the end of his general audience in St. Peter's Square at the Vatican, Wednesday, Feb. 27, 2013. Pope Benedict XVI basked in an emotional sendoff Wednesday at his final general audience in St. Peter's Square, recallingmoments of \"joy and light\" during his papacy but also times of great difficulty. He also thanked his flock for respecting his decision to retire. (AP Photo/Luca Bruno)